
One of the most obscure GBA games ever created has finally been preserved: the Glucoboy, a combination of game cartridge and blood glucose tester that was designed to help encourage kids with diabetes to stay on top of blood sugar monitoring.
The Glucoboy was the brainchild of an inventor named Paul Wessel, whose diabetic son was a Game Boy enthusiast. Wessel believed that games could help kids push through the hassle of regular blood testing, and began his efforts to bring the product to market in the early 2000s, but was only able to secure funding in 2006 - $1.5 million from an Australian investment bank - which held the device's release back until 2007, when the GBA itself was rapidly losing relevance against the DS.